050期特围（{02,05,08,10,12,13,15,17,19,22,26,29,30,31,32,33,35,38,40,43,45,46,47,49}）开40准
051期特围（{03,04,07,08,09,10,12,16,18,20,21,23,24,34,38,39,40,42,43,44,45,47,48,49}）开28错
052期特围（{03,06,10,11,13,14,16,17,19,20,21,23,25,27,28,30,33,35,39,40,44,47,48,49}）开22错
053期特围（{01,04,05,06,07,13,15,16,17,20,21,22,23,25,26,27,31,33,34,36,37,40,47,49}）开？中